Nobody was seriously hurt when a Delta MD-88 ran off a snowy runway at New York’s La Guardia Airport, in March 2015, but the NTSB said this week the crew made some mistakes in dealing with the situation. The captain applied “excessive reverse thrust,” which caused a loss of directional control by “blanking out” the rudder. The cabin crew also made mistakes in managing the evacuation, which took longer than it should have.
Source: avwebNTSB: Delta Runway Overrun Caused By Reverse Thrust